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ECP-383 Sample Questions Answers

Questions 4

Using a cell optimization tool, you detect a sector that takes a large amount of traffic from a distant location that is covered by other sites and is also outside of the coverage predicted for this sector.

Which physical optimization action should you perform first In this situation?

Options:

A.

Increase the antenna height and verify the result.

B.

Install TMA and verify the result.

C.

Downtilt the antenna and verify the result.

D.

Increase the transmit power and verify the result.

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Questions 5

Which KPI must be captured in a drive test with TEMS to review VoLTE accessibility?

Options:

A.

Call Setup Success Rate

B.

Handover Success Rate

C.

Call Drop Rate

D.

Voice Quality

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Questions 6

A customer is deploying VoLTE and complains about high voice drop rates and voice quality degradation at the cell edge in most LTE cells in the area. The network has a dense WCDMA coverage on the 700 MHz band and patchy LTE coverage on the 2100 MHz band.

Which two features would you activate to solve this problem? (Choose two.)

Options:

A.

DRX

B.

256 QAM DL

C.

TTI Bundling

D.

SRVCC Handover to UTRAN

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Questions 7

Which two statements are true about the Antenna Integrated Radio (AIR)? (Choose two.)

Options:

A.

The AIR is a hardware unit that integrates the radio and the antenna.

B.

The AIR replaces the digital/baseband unit.

C.

The AIR in an LTE system is directly connected with the MME using the SI interface.

D.

The AIR can replace the standard RU/RRU and antenna.

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Questions 8

In LTE, what is the definition of an A2 event?

Options:

A.

The neighbor cell becomes better than the threshold.

B.

The serving ceil becomes better than the threshold.

C.

The serving cell becomes worse than the threshold.

D.

The neighbor cell becomes worse than the threshold.

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Questions 9

Which two statements are valid for Call Re-establishment in WCDMA? (Choose two.)

Options:

A.

Call Re-establishment in WCDMA targets RL failures or RLC errors in the DL.

B.

When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE selects a new cell using the soft handover procedure.

C.

Call Re-establishment in WCDMA improves the voice drop rate.

D.

When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE goes to idle mode.

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Questions 10

A user is making a call on an LTE network.

In this scenario, which encoding schemes are used?

Options:

A.

OFDMA in downlink, COMA in uplink

B.

CDMA in downlink, SC-FOMA in uplink

C.

SC-FDMA in downlink, OFDMA in uplink

D.

OFDMA in downlink, SC-FDMA in uplink

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Questions 11

Which two statements are correct about voice quality in a VoLTE network? (Choose two.)

Options:

A.

Increasing jitter will improve voice quality.

B.

Increasing silent gaps in the received audio signal will improve voice quality.

C.

Decreasing jitter will Improve voice quality.

D.

Decreasing silent gaps in the received audio signal will improve voice quality.

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Questions 12

You have collocated sectors In your 2G network on the GSM 900 and the DCS 1800 bands. Reviewing the network level traffic distribution, you noticed that the GSM 900 sectors have five times more traffic than the DCS 1800 sectors.

Which two actions would improve load balancing between these bands? (Choose two.)

Options:

A.

adding additional GSM 900 sectors

B.

changing the handover margin

C.

expanding the site's transmission link

D.

changing the idle mode cell reselection parameter

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Questions 13

What are two benefits provided by the introduction of GPRS/EGPRS Downlink Power Control in a GSM network? (Choose two.)

Options:

A.

reduced power consumption in RBS

B.

reduced downlink Interference levels In the system

C.

reduced uplink interference levels in the system

D.

increased PS accessibility

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Questions 14

Which statement is correct about network slicing?

Options:

A.

Network slicking is a splitting of end users between competing operators in small population markets.

B.

Network slicing is a customized division of a cellular network designed to allow end users to control allocation of network resources between themselves.

C.

Network slicing is a separation of network architecture between vendors in a multivendor network.

D.

Network slicing is a movement of network functions between aggregation layers to meet performance requirements for specific use cases.

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Questions 15

What is a benefit of Remote Radio Unit (RRU) deployment compared to a standard Radio Unit (RU) deployment?

Options:

A.

RRU consumes less power.

B.

RRU provides for easier legalization of the equipment.

C.

RRU provides easier deployment and maintenance.

D.

RRU has lower feeder loss.

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Questions 16

Review the exhibit.

Cell A has neighbor relations with cells B and C which share the same frequency and PCI. Cells B and C do not share any overlapping area.

Referring to the exhibit which statement is correct?

Options:

A.

Handover performance of cell A is affected.

B.

There is no degraded performance expected in any of the cells.

C.

Handover performance of cell C is affected.

D.

Handover performance of cell B is affected.

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Questions 17

You are using the Performance Measurements system for Ericsson WCDMA network analysis and must use predefined counters.

On which two levels would these counters be collected? (Choose two.)

Options:

A.

the cell level

B.

the TRX level

C.

the RNC level

D.

the BSC level

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Questions 18

Several operators are using a Multi Operator Core Network (MOCN) with the Shared LTE RAN feature. Which element is shared by the operators in this scenario?

Options:

A.

eNodeB

B.

IMS

C.

MME

D.

SGW

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Exam Code: ECP-383
Exam Name: Ericsson Certified Associate - Radio Network Optimization
Last Update: Nov 22, 2024
Questions: 62
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